From bcb766b4cee2b2cee84361128bef5a5720a1faf8 Mon Sep 17 00:00:00 2001
From: Wilson Snyder <wsnyder@wsnyder.org>
Date: Wed, 30 Oct 2019 21:49:25 -0400
Subject: [PATCH] Fix bad-syntax crashes, bug1577.

---
 Changes           | 2 +-
 src/V3LinkDot.cpp | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/Changes b/Changes
index 3c99e9702..46cd113fc 100644
--- a/Changes
+++ b/Changes
@@ -25,7 +25,7 @@ The contributors that suggested a given feature are shown in []. Thanks!
 ****  Fix multithreaded yield behavior when no work.  [Patrick Stewart]
 
 ****  Fix bad-syntax crashes, bug1548, bug1550-1553, bug1557-1560, bug1563,
-      bug1573-1576. [Eric Rippey]
+      bug1573-1577. [Eric Rippey]
 
 ****  Benchmark --protect-lib runtime, bug1519. [Todd Strader]
 
diff --git a/src/V3LinkDot.cpp b/src/V3LinkDot.cpp
index 9e04de51f..97f5f61f5 100644
--- a/src/V3LinkDot.cpp
+++ b/src/V3LinkDot.cpp
@@ -2147,7 +2147,9 @@ private:
                                        <<(baddot!="" ? baddot : nodep->prettyName())
                                        <<"' in dotted "<<expectWhat
                                        <<": '"<<m_ds.m_dotText+"."+nodep->prettyName()<<"'");
-                        okSymp->cellErrorScopes(nodep, AstNode::prettyName(m_ds.m_dotText));
+                        if (okSymp) {
+                            okSymp->cellErrorScopes(nodep, AstNode::prettyName(m_ds.m_dotText));
+                        }
                     }
                     m_ds.m_dotErr = true;
                 }